kernel: generic: Add kernel 4.14 support

This adds initial support for kernel 4.14 based on the patches for
kernel 4.9.

In the configuration I deactivated some of the new possible security
features like:
CONFIG_REFCOUNT_FULL
CONFIG_SLAB_FREELIST_HARDENED
CONFIG_SOFTLOCKUP_DETECTOR
CONFIG_WARN_ALL_UNSEEDED_RANDOM

And these overlay FS options are also deactivated:
CONFIG_OVERLAY_FS_INDEX
CONFIG_OVERLAY_FS_REDIRECT_DIR

I activated this:
CONFIG_FORTIFY_SOURCE
CONFIG_POSIX_TIMERS
CONFIG_SLAB_MERGE_DEFAULT
CONFIG_WATCHDOG_HANDLE_BOOT_ENABLED

I am not sure if I did the porting correct for the following patches:
target/linux/generic/backport-4.14/020-backport_netfilter_rtcache.patch
target/linux/generic/hack-4.14/220-gc_sections.patch
target/linux/generic/hack-4.14/321-powerpc_crtsavres_prereq.patch
target/linux/generic/pending-4.14/305-mips_module_reloc.patch
target/linux/generic/pending-4.14/611-netfilter_match_bypass_default_table.patch
target/linux/generic/pending-4.14/680-NET-skip-GRO-for-foreign-MAC-addresses.patch

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

target/linux/generic/files/drivers/net/phy/b53/b53_common.c

@@ -24,6 +24,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/switch.h>
+#include <linux/phy.h>
 #include <linux/of.h>
 #include <linux/of_net.h>
 #include <linux/platform_data/b53.h>

target/linux/generic/files/drivers/net/phy/rtl8306.c

@@ -25,6 +25,7 @@
 #include <linux/switch.h>
 #include <linux/delay.h>
 #include <linux/phy.h>
+#include <linux/version.h>
 
 //#define DEBUG 1
 
@@ -1032,7 +1033,9 @@ rtl8306_read_status(struct phy_device *pdev)
 
 static struct phy_driver rtl8306_driver = {
 	.name		= "Realtek RTL8306S",
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(4,13,0))
 	.flags		= PHY_HAS_MAGICANEG,
+#endif
 	.phy_id		= RTL8306_MAGIC,
 	.phy_id_mask	= 0xffffffff,
 	.features	= PHY_BASIC_FEATURES,

target/linux/generic/files/drivers/net/phy/swconfig.c

@@ -269,13 +269,7 @@ static void swconfig_defaults_init(struct switch_dev *dev)
 }
 
 
-static struct genl_family switch_fam = {
-	.id = GENL_ID_GENERATE,
-	.name = "switch",
-	.hdrsize = 0,
-	.version = 1,
-	.maxattr = SWITCH_ATTR_MAX,
-};
+static struct genl_family switch_fam;
 
 static const struct nla_policy switch_policy[SWITCH_ATTR_MAX+1] = {
 	[SWITCH_ATTR_ID] = { .type = NLA_U32 },
@@ -597,8 +591,13 @@ swconfig_parse_ports(struct sk_buff *msg, struct nlattr *head,
 
 		port = &val->value.ports[val->len];
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,12,0)
 		if (nla_parse_nested(tb, SWITCH_PORT_ATTR_MAX, nla,
 				port_policy))
+#else
+		if (nla_parse_nested(tb, SWITCH_PORT_ATTR_MAX, nla,
+				port_policy, NULL))
+#endif
 			return -EINVAL;
 
 		if (!tb[SWITCH_PORT_ID])
@@ -619,7 +618,11 @@ swconfig_parse_link(struct sk_buff *msg, struct nlattr *nla,
 {
 	struct nlattr *tb[SWITCH_LINK_ATTR_MAX + 1];
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,12,0)
 	if (nla_parse_nested(tb, SWITCH_LINK_ATTR_MAX, nla, link_policy))
+#else
+	if (nla_parse_nested(tb, SWITCH_LINK_ATTR_MAX, nla, link_policy, NULL))
+#endif
 		return -EINVAL;
 
 	link->duplex = !!tb[SWITCH_LINK_FLAG_DUPLEX];
@@ -1051,6 +1054,19 @@ static struct genl_ops swconfig_ops[] = {
 	}
 };
 
+static struct genl_family switch_fam = {
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,10,0)
+	.id = GENL_ID_GENERATE,
+#endif
+	.name = "switch",
+	.hdrsize = 0,
+	.version = 1,
+	.maxattr = SWITCH_ATTR_MAX,
+	.module = THIS_MODULE,
+	.ops = swconfig_ops,
+	.n_ops = ARRAY_SIZE(swconfig_ops),
+};
+
 #ifdef CONFIG_OF
 void
 of_switch_load_portmap(struct switch_dev *dev)
@@ -1222,8 +1238,12 @@ static int __init
 swconfig_init(void)
 {
 	INIT_LIST_HEAD(&swdevs);
-	
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,10,0)
 	return genl_register_family_with_ops(&switch_fam, swconfig_ops);
+#else
+	return genl_register_family(&switch_fam);
+#endif
 }
 
 static void __exit